package com.ly.framework.web.service;

import javax.annotation.Resource;

import com.ly.common.constant.Constants;
import com.ly.common.core.domain.model.LoginUser;
import com.ly.common.core.redis.RedisCache;
import com.ly.common.exception.CustomException;
import com.ly.common.exception.user.CaptchaException;
import com.ly.common.exception.user.CaptchaExpireException;
import com.ly.common.exception.user.UserPasswordNotMatchException;
import com.ly.common.utils.MessageUtils;
import com.ly.framework.manager.AsyncManager;
import com.ly.framework.manager.factory.AsyncFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Component;

/**
 * 登录校验方法
 * @author ruoyi
 */
@Component
public class SysLoginService {
    @Autowired
    private TokenService tokenService;

    @Resource
    private AuthenticationManager authenticationManager;

    @Autowired
    private RedisCache redisCache;

    /**
     * 登录验证
     * @param username 用户名
     * @param password 密码
     * @param code     验证码
     * @param uuid     唯一标识
     * @return 结果
     */
    public String login (String username, String password, String code, String uuid) {
        String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;
        String captcha = redisCache.getCacheObject ( verifyKey );
        redisCache.deleteObject ( verifyKey );
        if ( captcha == null ) {
            AsyncManager.me ().execute ( AsyncFactory.recordLogininfor ( username, Constants.LOGIN_FAIL, MessageUtils.message ( "user.jcaptcha.expire" ) ) );
            throw new CaptchaExpireException ();
        }
        if ( ! code.equalsIgnoreCase ( captcha ) ) {
            AsyncManager.me ().execute ( AsyncFactory.recordLogininfor ( username, Constants.LOGIN_FAIL, MessageUtils.message ( "user.jcaptcha.error" ) ) );
            throw new CaptchaException ();
        }
        // 用户验证
        Authentication authentication = null;
        try {
            // 该方法会去调用UserDetailsServiceImpl.loadUserByUsername
            authentication = authenticationManager
                    .authenticate ( new UsernamePasswordAuthenticationToken ( username, password ) );
        } catch ( Exception e ) {
            if ( e instanceof BadCredentialsException ) {
                AsyncManager.me ().execute ( AsyncFactory.recordLogininfor ( username, Constants.LOGIN_FAIL, MessageUtils.message ( "user.password.not.match" ) ) );
                throw new UserPasswordNotMatchException ();
            } else {
                AsyncManager.me ().execute ( AsyncFactory.recordLogininfor ( username, Constants.LOGIN_FAIL, e.getMessage () ) );
                throw new CustomException ( e.getMessage () );
            }
        }
        AsyncManager.me ().execute ( AsyncFactory.recordLogininfor ( username, Constants.LOGIN_SUCCESS, MessageUtils.message ( "user.login.success" ) ) );
        LoginUser loginUser = (LoginUser) authentication.getPrincipal ();
        // 生成token
        return tokenService.createToken ( loginUser );
    }
}
